<!DOCTYPE html>
<html>

<head>
    <title>
        <%= title %>
    </title>
    <link rel='stylesheet' href='/stylesheets/style.css' />
</head>

<body>
    <% include nav.html %>

    <% if(locals.islogin){ %>
         用户已登录
    <% } else { %>
         <form method="post">          
              <input type="submit" value="登录">
          </form>
    <% } %>
</body>

</html>